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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente; Embrapa Unidades Centrais. |
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Data corrente: |
04/08/2016 |
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Data da última atualização: |
21/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PÁDUA, S. B. de; MARTINS, M. L.; VALLADÃO, G. M. R.; UTZ, L.; ZARA, F. J.; ISHIKAWA, M. M.; ANDRADE BELO, M. A. de. |
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Afiliação: |
SANTIAGO BENITES DE PÁDUA, AQUIVET SAÚDE AQUÁTICA; MAURÍCIO LATERÇA MARTINS, UFSC; GUSTAO MORAES RAMOS VALLADÃO, FCAV-UNESP; LAURA UTZ, PUC; FERNANDO JOSÉ ZARA, FCAV-UNESP; MARCIA MAYUMI ISHIKAWA, CNPMA; MARCO ANTONIO DE ANDRADE BELO, FCAV-UNESP. |
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Título: |
Host-parasite relationship during Epistylis sp. (Ciliophora: Epistylididae) infestation in farmed cichlid and pimelodid fish. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília v. 51, n. 5, p. 520-526, maio 2016. |
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DOI: |
http://dx.doi.org/10.1590/S0100-204X2016000500012 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The objective of this work was to describe the host?Epistylis sp. relationship during infestation on farmed fish. Five Nile tilapia (Oreochromis niloticus) and ten hybrid surubim catfish (Pseudoplatystoma reticulatum x P. corruscans), all diseased, were used for in vivo morphological analysis of sessile peritrichs by contrast microscopy. Fragments of infected tissues were subjected to histological processing and scanning electron microscopy. Epistylis sp. caused hemorrhagic ulcer disease, and cichlids were more prone to develop infestations throughout the body surface due to the attachment of the colonies to the scales, which did not occur with pimelodids. Multifocal granulomatous dermatitis was observed, associated with the hydropic degeneration of the epithelium and to ulcerative areas of necrosis. Microscopic examination showed the presence of bacterial microflora associated to Epistylis sp. peduncles. Therefore, this species can be considered a portal of entry for opportunistic bacteria.
Resumo: O objetivo deste trabalho foi descrever a relação hospedeiro?Epistylis sp. durante infestação em peixes cultivados. Foram utilizados cinco tilápias?do?nilo (Oreochromis niloticus) e dez híbridos de surubim (Pseudoplatystoma reticulatum x P. corruscans), todos parasitados, para análise morfológica in vivo de peritríquios sésseis por microscopia de contraste de fase. Fragmentos de tecidos infectados foram processados para histologia e microscopia eletrônica de varredura. Epistylis sp. causou doença ulcerativa hemorrágica, e os ciclídeos foram mais susceptíveis ao parasitismo na superfície do corpo em razão da fixação das colônias nas escamas, o que não ocorreu nos pimelodídeos. Foi observada ocorrência de dermatite granulomatosa multifocal, associada à degeneração hidrópica do epitélio e às áreas ulcerativas de necrose. O estudo microscópico mostrou a presença de bactérias associadas aos pedúnculos de Epistylis sp. Portanto, esta espécie pode ser considerada porta de entrada para bactérias oportunistas. MenosAbstract: The objective of this work was to describe the host?Epistylis sp. relationship during infestation on farmed fish. Five Nile tilapia (Oreochromis niloticus) and ten hybrid surubim catfish (Pseudoplatystoma reticulatum x P. corruscans), all diseased, were used for in vivo morphological analysis of sessile peritrichs by contrast microscopy. Fragments of infected tissues were subjected to histological processing and scanning electron microscopy. Epistylis sp. caused hemorrhagic ulcer disease, and cichlids were more prone to develop infestations throughout the body surface due to the attachment of the colonies to the scales, which did not occur with pimelodids. Multifocal granulomatous dermatitis was observed, associated with the hydropic degeneration of the epithelium and to ulcerative areas of necrosis. Microscopic examination showed the presence of bacterial microflora associated to Epistylis sp. peduncles. Therefore, this species can be considered a portal of entry for opportunistic bacteria.
Resumo: O objetivo deste trabalho foi descrever a relação hospedeiro?Epistylis sp. durante infestação em peixes cultivados. Foram utilizados cinco tilápias?do?nilo (Oreochromis niloticus) e dez híbridos de surubim (Pseudoplatystoma reticulatum x P. corruscans), todos parasitados, para análise morfológica in vivo de peritríquios sésseis por microscopia de contraste de fase. Fragmentos de tecidos infectados foram processados para histologia e microscopia eletrônica de varredura. ... Mostrar Tudo |
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Palavras-Chave: |
Patogênese; Peritriquio séssil; Sessile peritrich. |
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Thesagro: |
Doença animal; Histopatologia; Oreochromis Niloticus; Tilápia nilótica. |
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Thesaurus Nal: |
Histopathology; Pathogenesis; Pseudoplatystoma corruscans; Pseudoplatystoma reticulatum. |
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Categoria do assunto: |
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H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/146105/1/Host-parasite-relationship-during.pdf
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Marc: |
LEADER 03153naa a2200337 a 4500
001 2061493
005 2022-04-21
008 2016 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/S0100-204X2016000500012$2DOI
100 1 $aPÁDUA, S. B. de
245 $aHost-parasite relationship during Epistylis sp. (Ciliophora$bEpistylididae) infestation in farmed cichlid and pimelodid fish.
260 $c2016
520 $aAbstract: The objective of this work was to describe the host?Epistylis sp. relationship during infestation on farmed fish. Five Nile tilapia (Oreochromis niloticus) and ten hybrid surubim catfish (Pseudoplatystoma reticulatum x P. corruscans), all diseased, were used for in vivo morphological analysis of sessile peritrichs by contrast microscopy. Fragments of infected tissues were subjected to histological processing and scanning electron microscopy. Epistylis sp. caused hemorrhagic ulcer disease, and cichlids were more prone to develop infestations throughout the body surface due to the attachment of the colonies to the scales, which did not occur with pimelodids. Multifocal granulomatous dermatitis was observed, associated with the hydropic degeneration of the epithelium and to ulcerative areas of necrosis. Microscopic examination showed the presence of bacterial microflora associated to Epistylis sp. peduncles. Therefore, this species can be considered a portal of entry for opportunistic bacteria. Resumo: O objetivo deste trabalho foi descrever a relação hospedeiro?Epistylis sp. durante infestação em peixes cultivados. Foram utilizados cinco tilápias?do?nilo (Oreochromis niloticus) e dez híbridos de surubim (Pseudoplatystoma reticulatum x P. corruscans), todos parasitados, para análise morfológica in vivo de peritríquios sésseis por microscopia de contraste de fase. Fragmentos de tecidos infectados foram processados para histologia e microscopia eletrônica de varredura. Epistylis sp. causou doença ulcerativa hemorrágica, e os ciclídeos foram mais susceptíveis ao parasitismo na superfície do corpo em razão da fixação das colônias nas escamas, o que não ocorreu nos pimelodídeos. Foi observada ocorrência de dermatite granulomatosa multifocal, associada à degeneração hidrópica do epitélio e às áreas ulcerativas de necrose. O estudo microscópico mostrou a presença de bactérias associadas aos pedúnculos de Epistylis sp. Portanto, esta espécie pode ser considerada porta de entrada para bactérias oportunistas.
650 $aHistopathology
650 $aPathogenesis
650 $aPseudoplatystoma corruscans
650 $aPseudoplatystoma reticulatum
650 $aDoença animal
650 $aHistopatologia
650 $aOreochromis Niloticus
650 $aTilápia nilótica
653 $aPatogênese
653 $aPeritriquio séssil
653 $aSessile peritrich
700 1 $aMARTINS, M. L.
700 1 $aVALLADÃO, G. M. R.
700 1 $aUTZ, L.
700 1 $aZARA, F. J.
700 1 $aISHIKAWA, M. M.
700 1 $aANDRADE BELO, M. A. de
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 51, n. 5, p. 520-526, maio 2016.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
26/05/2023 |
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Data da última atualização: |
06/09/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 4 |
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Autoria: |
FARIA, M. R. de; MASCARIN, G. M.; BUTT, T.; LOPES, R. B. |
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Afiliação: |
MARCOS RODRIGUES DE FARIA, Cenargen; GABRIEL MOURA MASCARIN, CNPMA; TARIQ BUTT, Faculty of Science and Engineering, UK; ROGERIO BIAGGIONI LOPES, Cenargen. |
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Título: |
On-farm production of microbial entomopathogens for use in agriculture: Brazil as a case study. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Neotropical Entomology, v. 52, p. 122-133, 2023. |
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DOI: |
10.1007/s13744-023-01033-5. |
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Idioma: |
Inglês |
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Notas: |
Na publicação: Marcos Faria. |
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Conteúdo: |
Abstract: In Brazil, the production of beneficial microorganisms by growers exclusively for their own use is a practice known as "on-farm production". Regarding on-farm bioinsecticides, they were initially deployed for pests of perennial and semi-perennial crops in the 1970s but, since 2013, their use has extended to pests of annual crops such as maize, cotton, and soybean. Millions of hectares are currently being treated with these on-farm preparations. Local production reduces costs, meets local needs, and reduces inputs of environmentally damaging chemical pesticides, facilitating establishment of more sustainable agroecosystems. Critics argue that without implementation of stringent quality control measures there is the risk that the on-farm preparations: (1) are contaminated with microbes which may include human pathogens or (2) contain very little active ingredient, impacting on field efficacy. The on-farm fermentation of bacterial insecticides predominates, especially that of Bacillus thuringiensis targeting lepidopteran pests. However, there has been a rapid growth in the past 5 years in the production of entomopathogenic fungi, mostly for the control of sap-sucking insects such as whitefly (Bemisia tabaci (Gennadius)) and the corn leafhopper (Dalbulus maidis (DeLong and Wolcott)). In contrast, on-farm production of insect viruses has seen limited growth. Most of the ca. 5 million rural producers in Brazil own small or medium size properties and, although the vast majority still do not practice on-farm production of biopesticides, the topic has aroused interest among them. Many growers who adopt this practice usually use non-sterile containers as fermenters, resulting in poor-quality preparations, and cases of failure have been reported. On the other hand, some informal reports suggest on-farm preparations may be efficacious even when contaminated, what could be explained, at least partially, by the insecticidal secondary metabolites secreted by the pool of microorganisms in the liquid culture media. Indeed, there is insufficient information on efficacy and mode of action of these microbial biopesticides. It is usually the large farms, some with > 20,000 ha of continuous cultivated lands, that produce biopesticides with low levels of contamination, as many of them possess advanced production facilities and have access to specialized knowledge and trained staff. Uptake of on-farm biopesticides is expected to continue but the rate of adoption will depend on factors such as the selection of safe, virulent microbial strains and implementation of sound quality control measures (compliance with emerging Brazilian regulations and international standards). The challenges and opportunities of on-farm bioinsecticides are presented and discussed. MenosAbstract: In Brazil, the production of beneficial microorganisms by growers exclusively for their own use is a practice known as "on-farm production". Regarding on-farm bioinsecticides, they were initially deployed for pests of perennial and semi-perennial crops in the 1970s but, since 2013, their use has extended to pests of annual crops such as maize, cotton, and soybean. Millions of hectares are currently being treated with these on-farm preparations. Local production reduces costs, meets local needs, and reduces inputs of environmentally damaging chemical pesticides, facilitating establishment of more sustainable agroecosystems. Critics argue that without implementation of stringent quality control measures there is the risk that the on-farm preparations: (1) are contaminated with microbes which may include human pathogens or (2) contain very little active ingredient, impacting on field efficacy. The on-farm fermentation of bacterial insecticides predominates, especially that of Bacillus thuringiensis targeting lepidopteran pests. However, there has been a rapid growth in the past 5 years in the production of entomopathogenic fungi, mostly for the control of sap-sucking insects such as whitefly (Bemisia tabaci (Gennadius)) and the corn leafhopper (Dalbulus maidis (DeLong and Wolcott)). In contrast, on-farm production of insect viruses has seen limited growth. Most of the ca. 5 million rural producers in Brazil own small or medium size properties and, although the vast ma... Mostrar Tudo |
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Palavras-Chave: |
Bacillus; Baculoviruses; Biopesticidas; Microbial biopesticides. |
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Thesagro: |
Controle Biológico; Fungo Para Controle Biológico; Produção. |
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Thesaurus NAL: |
Biological control; Biological control agents; Entomopathogenic fungi. |
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Categoria do assunto: |
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S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1153996/1/s13744-023-01033-5.pdf
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Marc: |
LEADER 03720naa a2200301 a 4500
001 2156453
005 2023-09-06
008 2023 bl uuuu u00u1 u #d
024 7 $a10.1007/s13744-023-01033-5.$2DOI
100 1 $aFARIA, M. R. de
245 $aOn-farm production of microbial entomopathogens for use in agriculture$bBrazil as a case study.$h[electronic resource]
260 $c2023
500 $aNa publicação: Marcos Faria.
520 $aAbstract: In Brazil, the production of beneficial microorganisms by growers exclusively for their own use is a practice known as "on-farm production". Regarding on-farm bioinsecticides, they were initially deployed for pests of perennial and semi-perennial crops in the 1970s but, since 2013, their use has extended to pests of annual crops such as maize, cotton, and soybean. Millions of hectares are currently being treated with these on-farm preparations. Local production reduces costs, meets local needs, and reduces inputs of environmentally damaging chemical pesticides, facilitating establishment of more sustainable agroecosystems. Critics argue that without implementation of stringent quality control measures there is the risk that the on-farm preparations: (1) are contaminated with microbes which may include human pathogens or (2) contain very little active ingredient, impacting on field efficacy. The on-farm fermentation of bacterial insecticides predominates, especially that of Bacillus thuringiensis targeting lepidopteran pests. However, there has been a rapid growth in the past 5 years in the production of entomopathogenic fungi, mostly for the control of sap-sucking insects such as whitefly (Bemisia tabaci (Gennadius)) and the corn leafhopper (Dalbulus maidis (DeLong and Wolcott)). In contrast, on-farm production of insect viruses has seen limited growth. Most of the ca. 5 million rural producers in Brazil own small or medium size properties and, although the vast majority still do not practice on-farm production of biopesticides, the topic has aroused interest among them. Many growers who adopt this practice usually use non-sterile containers as fermenters, resulting in poor-quality preparations, and cases of failure have been reported. On the other hand, some informal reports suggest on-farm preparations may be efficacious even when contaminated, what could be explained, at least partially, by the insecticidal secondary metabolites secreted by the pool of microorganisms in the liquid culture media. Indeed, there is insufficient information on efficacy and mode of action of these microbial biopesticides. It is usually the large farms, some with > 20,000 ha of continuous cultivated lands, that produce biopesticides with low levels of contamination, as many of them possess advanced production facilities and have access to specialized knowledge and trained staff. Uptake of on-farm biopesticides is expected to continue but the rate of adoption will depend on factors such as the selection of safe, virulent microbial strains and implementation of sound quality control measures (compliance with emerging Brazilian regulations and international standards). The challenges and opportunities of on-farm bioinsecticides are presented and discussed.
650 $aBiological control
650 $aBiological control agents
650 $aEntomopathogenic fungi
650 $aControle Biológico
650 $aFungo Para Controle Biológico
650 $aProdução
653 $aBacillus
653 $aBaculoviruses
653 $aBiopesticidas
653 $aMicrobial biopesticides
700 1 $aMASCARIN, G. M.
700 1 $aBUTT, T.
700 1 $aLOPES, R. B.
773 $tNeotropical Entomology$gv. 52, p. 122-133, 2023.
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